Routing

You need to define a URL to route connections to the ChatConsumer consumer you have implemented. Channels provides routing classes that allow you to combine and stack consumers to dispatch based on what the connection is. You can think of them as the URL routing system of Django for asynchronous applications.

Create a new file inside the chat application directory and name it routing.py. Add the following code to it:

from django.urls import re_path
from . import consumers
websocket_urlpatterns = [
    re_path(
        r'ws/chat/room/(?P<course_id>\d+)/$',
        consumers.ChatConsumer.as_asgi()
    ),
]

In this code, you map a URL pattern with the ChatConsumer class that you defined in the chat/consumers.py file. There are some details that are worth reviewing:

• You use Django’s re_path() to define the path with a regular expression instead of path(). Channels’ URL routing may not function correctly with path() routes if...